647714999 has 2 divisors, whose sum is σ = 647715000. Its totient is φ = 647714998.

The previous prime is 647714993. The next prime is 647715043. The reversal of 647714999 is 999417746.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647714999 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647714993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323857499 + 323857500.

It is an arithmetic number, because the mean of its divisors is an integer number (323857500).

Almost surely, 2^647714999 is an apocalyptic number.

647714999 is a deficient number, since it is larger than the sum of its proper divisors (1).

647714999 is an equidigital number, since it uses as much as digits as its factorization.

647714999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 647714999 is about 25450.2455587368. The cubic root of 647714999 is about 865.2228585901. Note that the first 3 decimals are identical.

The spelling of 647714999 in words is "six hundred forty-seven million, seven hundred fourteen thousand, nine hundred ninety-nine".